Anna Yamaguchi

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Recently, the use of wireless systems as cellular phones, PHS, Wi-Fi, and WiMAX has been expanding. Meanwhile the resources of wireless radio systems are finite. Therefore, there is concern about exhausting these resources due to their expanded growth. The cognitive radio networks have been proposed to resolve this problem. We previously proposed cognitive(More)
This paper reports on perceptual quality of service (PQoS) investigation for the Motion-JPEG2000 video compression. In all today’s networks (Internet, mobile or Wireless Local Area Networks), video quality is measured mostly using peak signal-to-noise ratio (PSNR). PSNR, however, does not take into account human vision and thus cannot be a reliable(More)
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